Read The Body Keeps the Score by Bessel van der Kolk. Essential. Also, Getting Past Your Past by Francine Sharipo, the developer of EMDR. I've done a couple of EMDR sessions, and would do more but I have to pay cash and therapy isn't cheap. Check out Inner World of EMDR on youtube.
You're on the right track with exercise and meditation. I find meditation a form of prolonged exposure therapy. The memories come up and I allow myself to be with them without judgement - not judging the memory, myself, or others. What happened happened. Anything that tamps down an overactive fight/flight/freeze response is helpful, bottom up and top down exercises to calm the sympathetic nervous system. Rick Hanson's HEAL practice in Hardwiring Happiness is good stuff. Take in the good. Gratitude work...
I also benefited from reading and practicing Feeding Your Demons (Tsultrim Allione), but it's not for the timid.